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Within the city limits but near the northwestern outskirts of Great Falls, near the Missouri River and the Anaconda Copper Company, and approximately three mi. NW of Malmstrom AFB (then, Great Falls AFB).
Weather Conditions:
At 5:30 a.m., MST (15 August, 1950) the weather was partly overcast with middle altocumulus and altostratus clouds; the surface wind was SW, 16 knots. A cold front lay just north of the Canadian border, extending several hundred miles EW; it moved south and passed over Great Falls in the afternoon. The upper winds were reported W-WNW 250° 280°, 6 knots at 9,000 ft. on the previous evening. Temperatures were of the order of 20°C, dew point 9°C, and there was a slight inversion of 2°C in the 666-636 mb layer. The local half-hourly surface weather observations for 15 August 1950 at the Municipal Airport Weather Station showed that the surface wind increased to readings between 25 and 28 mph between 9:00 a.m. and 12 noon, and that it reached 37 mph at 1:12 p.m., and then stayed between 25 and 30 mph until almost sunset. The surface wind direction was constantly SW from 10:00 a.m. until 4:00 p.m. The sky was clear (visibility, 60 mi.); the temperature was 77° at 11:27 a.m., and reached a maximum of 83° at 4:27 p.m. The barometer fell slightly from 30.05 in. Hg. at 9:30 a.m. to 29.98 in. Hg. at 3 p.m., then steadied, and finally rose again after dark.
Abstract:
Witness I, general manager of a Great Falls baseball team, and Witness II, his secretary, observed two white lights moving slowly across the sky. Witness I made 16mm. motion pictures of the lights. Both individuals have recently reaffirmed the observation, and there is little reason to question its validity. The case remains unexplained. Analysis indicates that the images on the film are difficult to reconcile with aircraft or other known phenomena, although aircraft cannot be entirely ruled out.
At 11:25 a.m. (5 August or 15 August) Witness I, general manager of the Great Falls Electrics, a baseball team, was making an inspection of the baseball stadium (1,3) with his secretary, Witness II. In virtually all early publications (e.g., 3,5) the date for this is consistently given as 15 August 1950. However, Dr. Roy Craig of the Colorado project notes early correspondence between Witness I and Project Blue Book that raises an uncertainty about the date. A letter dated 9 January 1953, from Great Falls AFB (renamed Malmstrom AFB later) to Project Blue Book, conveying results of a re-interrogation which had been requested by Blue Book, states:
"(Witness I's) version of the incident is as follows: 'On about the 5th or 15th of August, 1950, I, as manager of the Electrics, a local baseball team, walked to the grandstand of the local stadium here in Great Falls, Montana. It was approximately 11:30 a.m. and my purpose was to check the direction of the wind in preparation for the afternoon's game.'"
A subsequent undated Blue Book review of the case, dated late 1956, carries the case dated "5 or 15 August, 1950". Dr. Craig determined by checking Great Falls newspaper records that no home game was scheduled for 15 August, and, in fact, the witness' team played that evening in Twin Falls, Idaho. Mrs. LaVern Kohl, Reference Librarian, Great Falls Public Library, determined, at Dr. Craig's request, that the baseball team played no home games in Great Falls between 9 and 18 August, 1950. The 15 August sighting date is therefore certainly open to question.
Accounts of the incident give essentially the following information:
As was his habit, Witness I looked NNW to the smokestack of the Anaconda Copper Company in order to ascertain the wind direction. (1,2,3) Directly in line with the stack, he saw two bright lights stationary in the sky (1) . After a few seconds, he decided they could not be airplanes (1), directed his secretary's attention to the objects, and ran to his car which was 50-60 ft.
away (1,2,3). Her observations were reported in Blue Book files to be identical to Witness I's (1). At his car he took five to eight seconds to load his motion picture camera with Eastman Kodachrome, daylight-type (1). The camera was a Revere turret-type, 16mm. magazine loader, with a F.1.9 telephoto lens with a 3 in. focal length. He set the diaphragm at F.22 and the focus at infinity. Film speed was 16 frames per second (2). From the time of sighting until he began filming, approximately 30 seconds elapsed.(3). At a point near his car (1), he began "panning" his camera slowly from right to left (2). During this time the lights had moved from a stationary position toward the SW and they continued to the SW until they faded away (1, 2, 3). The first frames were not made until the object was already in the SW (3). (See Plate 27 and Fig. 4).
According to the initial Air Force report of 6 October 1950, Witness
I described two disk-shaped lights having a bright, clean, "aluminum
quality" (2). He thought that the objects were about 50 ft. in
diameter, 3 ft. in depth and about 50 yds. apart (2). In a subsequent
written statement quoted in the Blue Book report of 9 January 1953,
he described them as being "like two new dimes in the sky" (1) and
said they may have made whistling or whooshing noise (2).
According to the initial report of 6 October 1950, Witness I
described a definite spinning motion (2). While in a stationary
position "an occasional vibration seemed to momentarily tilt them,
after which they would instantly correct their level plane to its
seemingly balanced position. The two objects made an abrupt flight
in an arc motion at very high speeds" (1). In late 1952 he estimated
the speed as being over 400 mph.(1). The Air Force report of 1950
quotes his first estimate of the speed as about 200 mph (2).
WItness I thought they were between 5,000 and 10,000 ft. in altitude
and at an elevation angle of 30°-35° above the horizon and
within 0.75 mi. (2) or 2-2.5 mi. (1) from him (1,2). Measurements of
the motion picture film (3) indicate that in the first available
frames, the lights were at an elevation of about 15° and slowly
descending (3).
Plate 27: Great Falls Movie Frame
Click on Thumbnail to see Full-size image.
The first 10 to 20 frames on the extant film show the objects at
their brightest and largest. Witness I alleges that about 30 frames
preceding these show the lights as disk-like objects with rotary
motion visible, but that these frames were missing when the film was
returned by the Air Force (see below). Throughout the sequence, the
two images stand out from the sky background because of their
intensity, sharpness, and constant relative orientation, one
preceding the other in a smooth progression across the sky and behind
the water tower. There is a slow fading and dwindling in size. In the
film, the lights do not hover or decelerate near the tower. According
to a photogrammetric analysis of the film (3), the lights disappear
completely from view by the end of the 16 sec. film. A later analysis
(3) indicates that although the images are fading by the final
frames (fading out by #225), they fade out suddenly enough at the end
that they "were not isotropic constant-luminosity reflectors" (e.g.
balloons).
At all times the two images present elliptical shapes which the
analysis (3) concludes, "is due exclusively to the movement of the
camera" (panning right to left), but my own measurements (see below)
suggest that, except for a few frames, the ellipticity is present
because the reflecting source is not circular. The ellipticity is
most clearly seen in the first frames, where the objects appear
larger.
"(he) had sent his movies to the Air Force back in 1950, but in 1950
there was no interest in the UFO so, after a quick viewing, Project
Grudge had written them off as the 'reflections of two F-94 jet
fighters that were in the area.'
"In 1952, at the request of the Pentagon, I reopened the
investigation...."
After the original, apparently cursory study of the film in 1950, the
Air Materiel Command Headquarters in a written statement to Witness I
concluded with the following example of military obfuscation: "...our
photo analysts were unable to find on it anything identifiable
of an unusual nature. Our report of analysis must therefore be
negative."
According to Ruppelt (5) the 1952 ATIC investigation "quickly
confirmed that the objects were not birds, balloons, or meteors." The
conclusions were that, assuming the objects to be at a distance too
great to be resolved, they moved too fast and were too steady to be
birds, but moved too slowly to be meteors. Airplanes were the only
tenable alternative (see below). The objects were described by
Ruppelt as of "unknown" origin. Mr. Al Chop, employed by ATIC at that
time and contacted in 1955 by Baker (3), "recalls that the analysis
was considered inconclusive," confirming Ruppelts's account.
When the film was returned from the Air Force, according to Witness
I, about the first 30 frames had been removed (3). If so, they were
never recovered. According to him, as described by Baker (3), "the
first 30-odd frames showed larger images of the UFOs with a notch or
band at one point on the periphery of the objects by which they could
be seen to rotate in unison while on the rest of the film the objects
show up only as unarticulated bright white dots."
Dr. R. M. L. Baker, Jr., of Douglas Aircraft Co., borrowed a 35mm.
reprint of the film from Sam Goldwyn Studios in 1955 for the
photogrammetric analysis reported in reference (3).
While studying the problem of reassessing old, "classic" cases, Dr.
Roy Craig of the Colorado Project interviewed several of the
principals in the case in 1967. Dr. Craig reported (4): (1) that
Witness I had a file of correspondence with the Air Force but could
not locate a letter in which, he asserted, the Air Force admitted
deleting some of the film; he could not remember any information
(such as his own discussion in the United Artists' film) about the
two airplanes in the vicinity; (2) that Witness I distinctly
remembered seeing a single light, rushing outside with Witness I
to photograph it, and noting that its appearance was quite different
from an airplane; she remembered seeing only one object; (3) that
some individuals who reportedly saw the film before it was lent to
the Air Force agreed that not all was returned, but several other of
these individuals disclaimed having seen the film at all.
Witnesses
1. According to the 1950 report of the Air Force interrogator,
Witness I went to Montana State University in 1935 and graduated in
1938 with a BA in journalism. Since 1941 he has resided in Great
Falls. During the war he served in the Army Air Forces from June 1943
to October 1945, attaining the rank of Corporal and was editor of a
newspaper at Great Falls AFB. He has been married since 1940. At the
time of this UFO sighting, he was general manager of the Great Falls
baseball club, and was a radio sports commentator. He is regarded as
a reliable, trustworthy, and honest individual and is highly
respected in the community.
2. Witness II, 19 years of age, was employed as Witness I's
secretary at the time of the sighting. She impressed the Air Force
interrogator as being a "fairly reliable individual and of good sound
judgment."
In view of the detailed published analysis by Dr. Baker (3) I will
limit this discussion to a summary of his results and some new
results of our study.
A test not carried out by Baker has a bearing on his conclusions and
thus will be described first. lf the clear ellipticity of the images
on the film were the result of resolution of disks oriented parallel
with the ground, then the apparent inclination i, measured by the
minor and major axes, b and a, would be equal to the altitude angle
a. That is,
In spite of the rather large uncertainties in the i measurements,
especially in the later frames, the meaning of the table is clear:
the flattening of the recorded image is not nearly enough to be
explained by the foreshortening of a horizontally-oriented ellipse.
As does Baker, I infer that the object probably is not really
resolved; rather, it is a bright source with an angular size somewhat
less than the maximum measured in the first frames (0.00151
radians). Since the measured apparent i stays constant while the
angular size drops to 0.6 this value by the last measured frames, the
true image size must be only slightly less than the apparent size and
some of the rounding may be due to halation. Baker concludes that the
ellipticity is due to camera panning motion; however, the relative
consistency of the "i" values, plus the clear case of camera motion
in frame 2, greatly exceeding the flattening in the other frames,
indicates to me that there was a true and constant ellipticity or
flattening. The true or intrinsic value must be "flatter" than the
59° indicated by Table 3, and could, of course, even be 14°
(i.e., consistent with a horizontal disk).
With the conclusion in mind that the angular diameter was less than
0.00151 radians, consider the possible explanations of the film:
If the 15 August date were correct, the objects were not balloons or
airborne debris because they are moving into the wind. They are
disappearing to the SW, and Baker's analysis indicates a well
determined
The objects, as reported, were not birds because of the disk shape
and general strangeness to both witnesses; the objects filmed are
very unlikely to have been birds because of the linearity of the path
and uniformity of the images over 16 seconds, with absence of any
variation in photometry or shape that could be attributed to flapping
(usually 5-13 strokes/sec.), changes in orientation, or changes in
direction.
The objects were not meteors, since their angular rate of travel was
so slow, and they were filmed for at least 16 sec., yet they left no
trail, made no audible or visible explosions or fragmentation, and
were not reported elsewhere across Montana and other northwestern
states. The great bolide of 25 April 1966, for example, though it was
visible for about 30 sec., underwent marked brightness variations and
at least two explosions, left a marked trail indicated on all photos,
and was seen by thousands of persons.
Past investigations have left airplanes as the principal working
hypothesis. The data at hand indicate that while it strains
credibility to suppose that these were airplanes, the possibility
nonetheless cannot be entirely ruled out.
There are several independent arguments against airplane reflections.
(1) Short-term variations in image size (correlated with brightness),
time scale ca. 1 sec., are typically not more than ± 5%. A
priori considerations of aircraft stability and empirical
observations by Baker indicate that it is very unlikely that two
aircraft could maintain such constant reflections over not only the
16 sec. and the 20° azimuth arc photographed but also the minimum
of 50 sec. visually observed. I have confirmed this by studying
aircraft visually in the vicinity of Tucson airports; in at least a
dozen cases none has been seen to maintain a constant or
unidentifiable reflection as long as 16 sec.
(2) Assuming that 15 August was the correct date, Air Force
investigators found that there were two F-94 jets in the vicinity and
that they landed only minutes after the sighting, which could well
have put them in circling path around Malmstrom AFB, only three miles
ESE of the baseball park. However, Witness I reported seeing two
planes coming in for a landing behind him immediately following the
filming (3), thereby accounting for those aircraft.
(4) Mariana reported that the objects when first sighted in
the north (apparently before they curved around onto the 171°
heading) were at altitude angle 30 to 35°. If one assumes a
flight with constant linear altitude above the ground, then the
distance from the observer goes as the inverse of the sine of
the altitude angle. Therefore at the moment of initial sighting
the objects were probably about twice as close and twice as
large in apparent size as in the first movie frames. If our
inference from Table I is correct, then the initial angular size
when Mariana and Miss Raunig first saw the objects was roughly
0.17 [0.17°], or about a third the size of the moon. This
is consistent with his description of the objects as "like
two new dimes in the sky" (i.e. he could have detected a
disk shape) but inconsistent with aircraft, which could have
been identified.
(5) A fifty foot long aircraft at a distance of 6 miles
would subtend an angle of 0.00158 [radian], slightly larger than the
images on the first frames. Therefore, as aircraft, the objects
must be at least 6 mi. away. The measured angular velocity of
0.0192 radians/sec would thus give a minimum velocity of 415 hr
[mi/hr], implying not a light aircraft, but a jet. The maximum
(dive) speed of the F94 is 602 mi/hr; landing speed, 130 mi/hr;
stall speed 108 mi/hr. Thus the first frames, taken alone, are
consistent with two F94's at 6 to 8 miles distance; but the
flight path defined by the other frames and the visual
descriptions indicating an initial distance closer to 3 or 4
miles are inconsistent with the observations.
If one ignores the visual testimony that the objects were
disk shape [shaped], ignores the visual testimony indicating
they were initially close enough to be visually resolved as aircraft,
ignores the film evidence that they were on a 171° heading
that would not be expected to produce a bright reflection, and
assumes that bright and constant reflections could have been
maintained from two aircraft for a minimum of 16 seconds (film)
and probably at least 50 seconds (visual), then one can
hypothesize that the Great Falls UFO sighting is the result of
two F94 or similar jet aircraft, initially at perhaps 5 miles
from the observers, and at the beginning of filming 7 miles from
the observers, maintaining (fortuitously) constant reflections
of some portion of their surfaces. This restricts them to
fortuitous but quite conceivable parabolic flight paths with the
observers at the focus; such flight paths would form an arc
around Malmstrom AFB and might be associated with a landing
there.
While such a hypothesis is tenable, it conflicts with
some of the "soft" data. It is judged reasonable only
to regard this object as unidentified. At the same time, the
data are inconclusive and cannot be said to give probative
support for the existence of extraordinary aircraft, or
"flying saucers."
3b. 1950Two sources of weather data: "weather maps," and half hourly
surface observation by Weather Bureau at Great Falls Municipal
Airport.
3c. 1955Telephone conversation; R. M. L. Baker to witness I, March.
3d. 1955Correspondence; R. M. L. Baker to Col. D. M. Hamilton,
Commanding Officer, Malstrom [Malmstrom] AFB, November.
Figure 4: Great Falls Locale
Click on Thumbnail to see Full-size image.
i = arc sin 
a
b = a
Table 3
INCLINATION VERSUS ALTITUDE
Inclination
Frame No.
i1
i2
Altitude
(See Ref. 3)
(1st UFO)
(2nd UFO)
1
64°
58°
15°
2
image blur due to camera motion
3
57
59
16
63
55
14°
32
57
58
48
48
56
64
55
62
80
68
61
96
58
63
112
51
75
128
50
52
13°
3a. 1950Interrogation of pilots of reported F-94's by Project
Bluebook, probably identical to 2.